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goldfiish [28.3K]
3 years ago
6

Which substance is most easily grounded?

Physics
2 answers:
swat323 years ago
5 0

Answer:

The reference point in an electrical circuit to measure voltages is called <em>Earth</em> or <em>Ground</em>; that point is a direct hookup to earth that helps stabilizing electrical currents to prevent high voltage surges.

What makes a substance easily grounded is to be a good energy conductor; metallic objects are generally good energy conductors aka GEM <em>"Ground Enhancement Materials"</em> and they are mostly produced from rocks and minerals. That's why the answer is (B.) <em>Iron Nail</em>.

Explanation:

Basile [38]3 years ago
3 0

Answer:Iron nail

Explanation:

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If an electron moves in a circle of radius 21 cm perpendicular to a B field of 0.4 T, what are the speed of the electron and the
kodGreya [7K]

Answer:

a)

v = 4.048 *10^6 m/s

b)  

Angular frequency =  1.92 * 10^7

Explanation:

As we know

v =  \frac{qBr}{m}

q is the charge on the electron = 3.2 * 10^{-19} C

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r is the radius of the circle = 0.21 m

mass of the electrons = 6.64 * 10^{-27} Kg

a)

Substituting the given values in above equation, we get -

v = \frac{3.2 * 10^{-19}*0.4*0.21}{6.64 * 10^{-27}} \\v = 4.048 *10^6m/s

b)  

Angular frequency =

\frac{4.048 * 10^6 }{0.21} \\1.92 * 10^7

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Answer:

200 N

Explanation:

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